Net rack structure integrated design and construction method based on standardization and industrialization

Abstract

The invention discloses a grid structure integrated design and construction method based on standardization and industrialization, which integrates standardization and industrialization production into integrated design, solves the limitation of the prior art and realizes comprehensive optimization of grid structure integrated design and construction. The specification and the size of the purlin holder component designed, manufactured and constructed through the method are only related to the diameter of the upper chord ball of the net rack, and therefore the specification, the size and the number of the purlin holder component can be reduced from tens of thousands of specifications, sizes and numbers of the purlin holder component designed, manufactured and constructed through a traditional design and construction method to more than ten kinds. Under the conditions that the structural construction precision is guaranteed and design and construction of maintenance systems such as a metal roof are not affected, standardized design and industrial production of the purlin holder component can be achieved, meanwhile, material management, material finding and installation are very convenient and fast during construction, and the difficulty and cost of machining, manufacturing and construction can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of building steel structures, and more specifically to an integrated design and construction method of a grid structure based on standardization and industrialization. Background Art

[0002] At present, integrated design has become an important trend in grid structure design. It improves the integrity of design and the coordination of construction by closely combining design, analysis, construction and other links. However, the existing integrated design method still lacks standardized design and industrialized production of structural components, resulting in a large variety of grid structure components, low manufacturing and processing efficiency, and difficulty in finding materials on site. These problems have seriously affected the progress of the project, quality and cost control, and restricted the further development and application of the integrated design and construction method of grid structures.

[0003] Therefore, it is necessary to integrate standardization and industrialized production into the integrated design to solve the limitations of existing technologies and achieve comprehensive optimization of the integrated design and construction of grid structures. Summary of the invention

[0004] The present invention provides a grid structure integrated design and construction method based on standardization and industrialization, which solves the problems of the existing integrated design and construction method, such as a large variety of components, low manufacturing efficiency, and difficulty in finding materials on site.

[0005] To achieve the above object, the present invention adopts the following technical solution: a standardized, industrialized grid structure integrated design and construction method, comprising the following steps: S1, obtain the finished surface A1 of the building; S2, the height from the center of the ball to the top of the purlin is Z1, the thickness of the metal roof structure layer is Z2, and the surface A1 is offset according to Z=Z1+Z2 to obtain the surface A2 where the upper chord node of the structure is located; S3, generating a chord-ball node on the grid on the surface A2, and generating a grid structure model; S4. Perform finite element analysis on the grid structure to obtain the deformation value [Δ] of each node; S5, using the deformation [Δ] of each node as the pre-deformation value, modifying the grid model, obtaining the pre-deformed grid line model, and using it to carry out detailed structural design; S6, identify the size of the upper chord ball, and generate a standardized purlin from the center of the ball, with the direction facing the normal direction of the surface A2; S7. Assemble and construct the steel structure, purlin brackets and purlins according to the pre-deformed deepening model; S8, after the construction of the grid structure is completed and unloaded, the curved surface formed by the upper chord coordinates after the structure is deformed is basically consistent with A2; S9. The metal roof is designed, manufactured and constructed based on the curved surface A1.

[0006] Furthermore, the value Z in step S2 is the total structural thickness of the grid roof, including the height Z1 from the center of the ball to the top of the purlin and the thickness Z2 of the metal roof structural layer.

[0007] Furthermore, in step S3, after the upper chord spherical node of the grid is generated on the surface A2, the lower chord is generated by reverse deduction, and the grid is divided on the completed surface in a parameterized manner to generate a grid structure model.

[0008] Furthermore, step S5 includes refining the value selection criteria of the node deformation value [Δ], the node deformation value [Δ] includes ΔX, ΔY, ΔZ, ΔRX, ΔRY, ΔRZ, and selecting the three-dimensional coordinate values ​​of ΔX, ΔY, and ΔZ to perform pre-deformation correction on the grid model.

[0009] Furthermore, in step S6, the thickness of the metal roof structure layer is consistent, and the distance from the top elevation of all purlins of the grid structure to the center of the upper chord ball is equal. Therefore, the height of the standardized purlin is only related to the upper chord ball and is determined and generated according to the diameter of the upper chord ball.

[0010] Furthermore, step S6 includes modifying the direction of the purlin support axis, which is the normal direction toward the curved surface A2.

[0011] Furthermore, in step S9, the detailed model is designed based on the pre-deformed corrected grid model, and the standardized purlin brackets are installed perpendicular to the outer surface during assembly construction.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention establishes the relationship between the purlin support height and the ball node through technical means such as parametric design and finite element analysis. The specifications and dimensions are only related to the diameter of the upper chord ball of the grid. Therefore, the specifications, dimensions and numbers can be reduced from tens of thousands under traditional design and construction methods to more than ten kinds. Under the conditions of ensuring the structural construction accuracy and not affecting the design and construction of maintenance systems such as metal roofs, the standardized design and industrialized production of purlin support components can be achieved. At the same time, material management, material sourcing and installation are very convenient during construction, which can greatly reduce the difficulty and cost of processing, manufacturing and construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a process of a standardized and industrialized grid structure integrated design and construction method of the present invention; Figure 2 It is a schematic diagram of the completed surface of a standardized and industrialized grid structure integrated design and construction method of the present invention; Figure 3The diagram is a schematic diagram of purlin support dimensions based on a standardized, industrialized grid structure integrated design and construction method of the present invention. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-Figure 3 The specific implementation method of the standardization and industrialization-based integrated design and construction method of the grid structure of the present invention is further described in detail.

[0015] A standardized and industrialized grid structure integrated design and construction method comprises the following steps: S1, obtain the finished surface A1 of the building; S2, the height from the center of the ball to the top of the purlin is Z1, the thickness of the metal roof structure layer is Z2, and the surface A1 is offset according to Z=Z1+Z2 to obtain the surface A2 where the upper chord node of the structure is located; S3, generating a chord-ball node on the grid on the surface A2, and generating a grid structure model; S4. Perform finite element analysis on the grid structure to obtain the deformation value [Δ] of each node; S5, using the deformation [Δ] of each node as the pre-deformation value, modifying the grid model, obtaining the pre-deformed grid line model, and using it to carry out detailed structural design; S6, identify the size of the upper chord ball, and generate a standardized purlin from the center of the ball, with the direction facing the normal direction of the surface A2; S7. Assemble and construct the steel structure, purlin brackets and purlins according to the pre-deformed deepening model; S8, after the construction of the grid structure is completed and unloaded, the curved surface formed by the upper chord coordinates after the structure is deformed is basically consistent with A2; S9. The metal roof is designed, manufactured and constructed based on the curved surface A1.

[0016] In this embodiment, preferably, the value Z in step S2 is the total structural thickness of the grid roof, including the height Z1 from the center of the ball to the top of the purlin and the thickness Z2 of the metal roof structural layer.

[0017] In this embodiment, preferably, in step S3, the spherical nodes of the upper chord of the grid are generated on the surface A2, and then the lower chord is generated by reverse deduction. The grid is divided on the completed surface in a parameterized manner to generate a grid structure model.

[0018] In this embodiment, preferably, step S5 includes refining the value selection standard of the node deformation value [Δ], and the node deformation value [Δ] includes ΔX, ΔY, ΔZ, ΔRX, ΔRY, and ΔRZ. The three-dimensional coordinate values ​​of ΔX, ΔY, and ΔZ are selected to perform pre-deformation correction on the grid model.

[0019] In this embodiment, preferably, step S6 includes modifying the direction of the purlin axis, which is the normal to the curved surface A2. The thickness of the metal roof structure layer is consistent, and the distance from the top elevation of all purlins in the grid structure to the center of the upper chord ball is equal. Therefore, the height h of the standardized purlin is only related to the upper chord ball and is determined and generated according to the size of the diameter d of the upper chord ball.

[0020] In this embodiment, the detailed model in step S9 is preferably designed based on the pre-deformed corrected grid model, and during assembly, the standardized purlin brackets are installed perpendicular to the outer surface.

[0021] It should be noted that during the implementation of the patent of this invention, the refinement of the value standard of [Δ], the modification of the axis direction of the purlin support, the modification of the value content of Z1 and Z2, etc. should all be included in the protection scope of this invention.

[0022] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A standardized and industrialized grid structure integrated design and construction method, characterized in that: The following steps are involved: S1, obtain the finished building surface A1; S2, the height from the center of the ball to the top of the purlin is Z1, the thickness of the metal roof structure layer is Z2, and the surface A1 is offset according to Z=Z1+Z2 to obtain the surface A2 where the upper chord node of the structure is located; S3, generating a chord-ball node on the grid on the surface A2, and generating a grid structure model; S4. Perform finite element analysis on the grid structure to obtain the deformation value [Δ] of each node; S5, using the deformation [Δ] of each node as the pre-deformation value, modifying the grid model, obtaining the pre-deformed grid line model, and using it to carry out detailed structural design; S6, identify the size of the upper chord ball, and generate a standardized purlin from the center of the ball, with the direction facing the normal direction of the surface A2; S7. Assemble and construct the steel structure, purlin brackets and purlins according to the pre-deformed deepening model; S8, after the construction of the grid structure is completed and unloaded, the curved surface formed by the upper chord coordinates after the structure is deformed is basically consistent with A2; S9. The metal roof is designed, manufactured and constructed based on the curved surface A1.

2. The standardized, industrialized grid structure integrated design and construction method according to claim 1, characterized in that: The value Z in step S2 is the total structural thickness of the grid roof, including the height Z1 from the center of the upper chord ball to the top of the purlin and the thickness Z2 of the metal roof structural layer.

3. The standardized, industrialized grid structure integrated design and construction method according to claim 1 is characterized in that: The step S5 includes refining the value standard of the node deformation value [Δ], wherein the node deformation value [Δ] includes ΔX, ΔY, ΔZ, ΔRX, ΔRY, and ΔRZ, and selecting the three-dimensional coordinate values ​​of ΔX, ΔY, and ΔZ to perform pre-deformation correction on the grid model.

4. The standardized, industrialized grid structure integrated design and construction method according to claim 1 is characterized in that: The step S6 includes modifying the direction of the purlin support axis, which is the normal to the curved surface A2. The thickness of the metal roof structure layer is consistent, and the distance from the top elevation of all purlin supports of the grid structure to the center of the upper chord ball is equal. Therefore, the height of the standardized purlin support only needs to be determined according to the diameter of the upper chord ball.

5. The standardized, industrialized grid structure integrated design and construction method according to claim 1 is characterized in that: In the step S7, the detailed model is designed based on the pre-deformed and corrected grid model, and the standardized purlin brackets are installed perpendicular to the outer surface during assembly.

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